Liquid-fuel-feeding device for internal-combustion engines



. I. W. JONES. LIQUID FUEL FEEDING DEVICE FOR INTERNAL COMBUSTIN ENGINES.

APPLICATION FILED MAY 25. |917- Patented Feb. 28, 1922 llllllllllll UNITED `s'rarresim'rearr oFFicE.

JOSEPH W. JONES, V0111" NEW YORK, N. Y.

LIQUID-UEL-FEECDING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

To all fai/Vom. t may concern.' Y

Be it known that I, JOSEPH lV.

citizen of the United States; and of the borough of Manhattan, in the State of N ew Yor have invented a useful Improvement in Liquid-Fuel-Feeding Devices for Internal-Combustion lEngines, of which the following is a specification.

y invention includes a novel pump by means of which liquid may be drawn from a source of suppl and forced to any de sired point elevate( abm'e the source of supply, by a. variable displacement element 1ocated in the pump chamber. Means oper.- ated by said variable displacement element are employed for opening communication between the interior of said variable displacement element and sources of different fluid pressures. Means on the discharge side. of the pump may be employed for controlling the discharge of the liquid from the pump.

y invention is more particularly in tended for pumping liquid fuel from a supply tank to the carbureter of an internal combustion engine. the side walls ofthe variable displacement element of the pump having deep transverse corrugatlons, the wiriable displacement element, being. normally extended when open to atmospheric pressure and contracted when open to' a lesser pressure; the meansfor opening the interior of the variable displacement iunping element to either the intake side o` the engine or to atmosphere being so arranged/as to operate at dilferetpositionsof the variable displacement element as, for instance, to open the interior of the variable displacement element tothe intake side of the engine when the element has been extended to a predeterto open the interior of the variable displacement element to atmosphere when the element has been contracted to a predetermined point.

Jonas, a resldent clty: and

A practical embodiment of my invention is represented in the accompanying draw-` ings in which` a Fig. 1 is a diagram illustrating the appli-V cation of my invention to an internal combustion engine in, which the carbureter is located above the supply tank.

Fig. 2 is a top plan view of my improved pump.

Fig. 3is a bottom plan view of t-he same.

Specicaton of Letters Patent. Application led May 25, 1917. Serial No.

new andV Patented Feb. 28, 1922. 171,004.

Fig. 4 is a vertical central section the. pump with th Y positions whlc t ey assume when the variable displacement element has reached a predetermined point in its extension and has opened itsdinterior to the intake side of the engine, an v Fig. 5 is a similar view with the arts in the' positions which they assume when t-he variable displacement element has been contracted to a predetermined point'and has opened its interior to external atmos here.

The internal combustion engine is dianoted as a whole by 1, its intake manifold by 2 and the carbureter by l The Iloat controlled inlet valve of the carbureter is denoted by 3*.

The liquid fuel supply tank is denoted by 4 and is shown as located below the carbureter 3. Mv improved pump comprises a base 5, a shell 6 and a shell 6 and base 5 together form a chamber the shell V6 are screiwtlireaded into an uprising peripheral Harige 9 of thebase 5. The branches 10 and 11 of the liquid supply line lead from the valve chest chamber of the carbureter 3 and to ply tank 4 respectively. An inlet passage 12 leads from the interior 44oi the chamber 8 to the branch 11,`

cate a check valve 13. 'A discharge passage 14 leads from the pump cham r 8 tothe branch 10, within which passage I locate a check valve 15. These check valves are shown in the present instance as'ball valves and access thereto may be readily7 obtained through screw caps 16 and 17 of the valve chest. These check valves are so arranged as to permit the How of liquid fuel from the supply tank to the carbureter, but will prevent the reverse How of the liquid fuel.

A normally extended disc 18 and sides 19; the sides 19- being deeply transversely corrugated. The circumferential bottom edge 0f the sides 19 is securely' held against movement, in the present instance by clamping the edge between the base 5 and the bottom of the side Walls of the shell 6. This variable displacement through valve chest 7. The

In the present instance the side Y,Wa-lis Aber of the carbureter element is normally extended under atmospheric pressure, occupyincthe position shown in Fig. 4, and may lie contracted to any predetermined point under the influence of a lesser pressure as for instance to the point shown in Fig. 5. The means for controlling the movement of the variable displacement element are herein shown as comprising a pipe 20 leading from the intake manifold 2 to a passage 21 in the base 5 of the pump. This passage 21 is shown as leading to a valve chamber 22 in a bottom cap 23. A passage 24 from external atmosphere also leads into this valve chamber 22. A common assage 25 leads upwardly from the valve c amber 22 in a central lug 26 u risin from the base 5 within the variable displacement element. One or more branch ports 27 lead from this passage 25 to the interior of the variable displacement element. An adjustable screw 28 extends upwardly7 through the valve chamber 22, the passage 25 and the upper cud of the lug 2G into engagement with a depending lug 29 carried b the disc 18 of the variable displacement e ement. The lower end of this screw 28 is located in a recess 30 of the bottom cap 23, in alinement with the passage 25. screw is provided with a nut 31 forming one abutment and a head 32 forming another abutment for a valve throwing sleeve 33 through which the screw 23 slides. rl`his sleeve 33 has a double conically tapered exterior along which a yielding ring 34 is shown as a coiled wire ring and is carried by a double faced valve 35. The coaction of this ring with thev double conically tapered exterior of the sleeve 33 is such that as the greatest diameter of the sleeve passes the transverse axis of the yielding ring, the ring will snap the valve into its to either close the vacuum passage 21 or the atmospheric pressure passage 24.

In operation, presuming the parts to hc in the position shown in Fig. 4, and it be required to feed liquid fuel to the float cham- 3, the raising of the disc 18 by the extension of the variable dislacement element will have caused the head. 32 of the screw 28 to engage the sleeve 33 and raise it a sufficient distance to cause the double faced valve 35 to snap down into position to close the port 24 leading to atmosphere and at the same time open communication from the interior of the variable displacement element to the intake manifold 2 of the engine through sage 21, the valve chan'ber 22. the passage 25 "and ports 2T. Under the influence of the partial vacuum, ment element will be gradually contracted, thus drawing in a supply of fuel from the supply tank 4, past the check valve 13 and into the pump chamber 3 When this variable displacement element has reached a position predetermined the pipe 20, the pas-V the variable displace-y :arcanos point in its contraction, the nut 31 will engage the top of the sleeve 33 and depress the sleeve a sufficient distance to cause the valve 35 to be snapped into the position shown in Fig. 5, where communication to the intake side of the engine is cut off and communication between the interior of the variable displacement element and external atmosphere is established through the passage 24, the valve chamber 22, the passage 25 and the ports 27. This will permit the variable displacement element to extend, if the fioat controlled inlet valve 3* of the carbureter be open, thus forcing the liquid which has been drawn into the pump chamber 8, out through the discharge passage 14, past the check valve 15 and through the branch 1() into the float chamber of the carbureter until the chamber is filled and the valve 3* is closed. It is to be understood that when the float controlled inlet valve 3* of the carbureter is closed by the reception of a suilicient supply of fuel, the variable displacement element will be caused to remain in its partly extended position until more fuel is required and the float controlled valve thereby opened, it being the intention that the pump should be of consider able capacity so that every time the variable displacement element is contracted, a considerable supply of liquid will be drawn into the pump chamber where it may be forced in small quantities into the supply chamber of the carbureter, as needed.

By the utilization of a pump of the character herein shown, it will be seen that all friction of the pumping element is eliminated Aand. the necessityl of an auxiliary gravity feed tank is a so eliminated, the liquid fuel being pumped directly from the supply tank to the carbureter in the amount needed by the relative positions of the parts.

It'will also be seen that the pump is only operated as needed, the drawing in of a new supply of liquid b the contraction of the normall entende pumping element being contro led by the position of the element which can be readi y adjusted as well as the time for permitting extension of the element to discharge the liquid.

W'hile I have described my invention as a pump for feeding fuel to the carbureter of an internal combustion engine, it is to be understood that I do not wish to limit myself to such use, but intend to cover the device for any purpose for which it may be used.

It is evident that this is only one embodiment which would come within the scope of my invention, and hence I do not wish to limit myself strictly to the construction herein set forth, but

What I claim is:

1. A pump comprising a pump chamber carbureter irrespective of the having inlet and discharge passages, an extensib e and contractible umping element in said pump chamber sai element having deeply corrugated side Walls and a closed free end and means on the discharge side of the pump for controlling the extension movement of said element.

2. A pump comprising a pump chamber having inlet and discharge passages, a fluid pressure controlled extensible and contractible pumping element in said pump chamber, said element having deeply con rugated side walls and a closed free end and' means on the discharge side of the pump for controlling the extension movement of said element.

3. A pump for feeding liquid fuel to the carbureter of an internal combustion engine, comprising a pump chamber having inlet and discharge passages, an extensible and contractible pumping element in said pump chamber, which element will be maintained at substantially any point in its discharging movement by a closure of the carbureter inlet valve, said element having deeply corrugated side Walls and a closed free end.

4. A pump for -feeding liquid fuel to the carbureter of an internal combustion engine, comprising a pump chamber having inlet and discharge passages and a fluid pressure controlled extensible and contractible pumping element in said pump chamber which element will be maintained at substantially any point in its discharging movement by a closure of the carbureter inlet valve, said element having deeply corrugated side Walls and a closed free end. y

5. A pump comprising a pump chamber, having inlet and discharge passages. a normally extended pumping element in said pump chamber, said element having deeply corrugated side Walls and a closed free end, means to contract said element and means on the discharge side of the pump for controlling the extension movement of said element. f

6. A pum for feeding liquid fuel to the carbureter ci) an internal combustion engine. comprising a pump chamber, having inlet and discharge passages, a normally extended pumping element 1n said pump chamber whose extension movement is controlled by the carbureter inlet valve, and means to contract said element, said element having deeply corrugated side Walls and a closed free end.

7. A pump comprising a pump chamber having inlet and discharge passages and a fluid pressure controlled extensible and contractible pumping element in said pump chamber, said element having deeply corrugated side Walls and a closed free end.

8. A pump for feeding liquid fuel to the carbureter ot' an internal combustion engine,

comprising a pump chamber having inlet and discharge passages and a fluid pressure controlled extensible and contractible pumping element in said pump chamber, said element having deeply corrugated side walls and a closed free end.

9. A ump comprising a pump chamber having lnlet and discharge passages, a fluid pressure controlled extensible and contractible pumping element in said' pump chamber, said element having deeply corrugated side Walls and a closed free end and automatic means to control the extension and contraction of said element.

10. A pump comprising a pump chamber having inlet and'discharge passages, a fluid pressure controlled extensible and contractible pumping element in said pump chamber, said element having deeply corrugated side Walls and a closed free end, automatic means to control the extension and contraction of said element, and additional means on the discharge side of the pump for controlling the extension movement of said element.

11. A pump comprising a pump chamber having inlet and discharge passages, a fiuid pressure controlled extensible and contractible pumping element in said pump chamber, said element havin deeply corrugated side walls and a closed ree en and means operated by the movement of said element to control its extension and contraction.

I2. A pump comprising a pump chamber having inlet and discharge passages, a Huid pressure controlled extensible and contracti- )le pumping element in said pump chamber, said element having deeply corrugated side walls and a closed free end, means operated by the movement of said element, to control its extension and contraction. and additional means on the discharge side of the pump for controlling the extension movement of said element.

13. A pump comprising a pump chamber having inlet and discharge passages and a normally extended extensible and contractible pumping element in said pump chamber` contracted by a reduction of pressure within said element, said element having deeply corrugated side walls and a closed free end.

14. A pump comprising a pump chamber having inlet and discharge passages, a normally extended` extensible and contractible pumping element in said pump chamber. contracted by a reduction of pressure within said element. said element having deeply corrugated side walls and a closed free end. and means on the discharge side of the pump for controlling the extension movement ot' said element.

15. A pump comprising a pump chamber having inlet and discharge passages, a normally extended extensible and contractible pumping element in said pump chamber.

contracted by a reduction of pressure within said element, said element having deepl corrugated side walls and a closed free en and automatic means to control the internal pressure of said element.

16. A pump comprising a pump chamber having inlet and discharge passages, a normally extended pumping element in said pump chamber, contracted by a reduction of pressure within said element, said element iaving deeply corrugated side walls and a closed free end and means on the discharge side of said pump for controlling the extension movement of said element.

17. A pump comprisinga pump chamber having inlet and discharge passages, a noi'- mally extended extensible and contractible pumping element in said pump chamber, contracted by a reduction of pressure `vithin said element. said element having deepl corrugated side walls and a closed free en( and means operated by the movement of said element to control its internal pressure.

.18. A pump comprising a pump chamber having inlet and discharge passages, a normally extended extensible and contractible pumping element in said pump chamber, contracted by a reduction of pressure within said element, said element having deepl corrugated side walls and a closed free en means operated by the movement of said element to control its internal pressure,- and means on the discharge side of the pump for controlling the extension movement of said element.

19. A pump comprising a pump chamber having inlet and discharge passages, a variable displacement extensible and contractible pumping element in said pump chamber, said element havinrr deeply corrugated side walls and a closed free end, two sources of differentpressure and automatic means to open the interior of the element to a lower pressure when extended to a certa-in degree and to a higher pressure when contracted to a certain degree.

20. A pump comprising a pump chamber having inlet and discharge passages, a variable displacement extensible and contractible pumping element in said pump chamber, said element having deeply corrugated side Walls and a closed free end, two sources of different pressure, automatic means -to open the interior of the element to a lower pres sure when extended to a certain degree and to a higher pressure when contracted to a certain degree, and means on the discharge side of the pump for controlling the extension movement of said element.

21. A liquid fuel pump for internal combustion engines comprising a pump chamber having inlet and discharge passages, an extensible and contractible pumping element in said pump chamber having passages leading respectively to external atmosphere and to the intake side of the engine and a common valve operating to open ,the interior of said element to the intake side of the engine when extended to a certain degree and to external atmosphere when contracted to a certain degree- 22.` A liquid fuel pump for internal combustion engines comprising a pump chamber having inlet and discharge passages, an extensible and conctractible pumping element in said pump chamber having passages leading respectively to external atmosphere and to the intake side of the engine, a common valve operating to open the interior of said element to the intake side of the engine when extended to a certain degree and to external atmosphere l when contracted to a certain degree, and 'means on the discharge side of the pump for controlling the extension movement of said element.

23. A liquid fuel pump for internal combustion engines Acomprising a pump chamber having inlet and discharge passages, an extensible and contractible pumpingr element in said pump cliamberliaving passages leading respectively to external atmosphere and to the intake side of the engine and a common valve operated by the movement of said element to open the interior of said element to the intake side of the engine when extended to a certain degree and to external atmosphere when contracted to a certain deee; 2l. A vliquid fuel pump for internal com-- bustion engines comprising a pump chamber having inlet and discharge passages, an extensible and contractible pumping element in said pump chamber having passages leading respectively'to external atmosphere and to the intake side of the engine, a common valve operated by the movement of said element to open the interior of said element to the intake side of the engine when extended to a certain degree and to external atmosphere when contracted to a, certain degree,

and means on the discharge side of the pump for controlling the extension movement of said element.

25. A liquid ,fuel pump for internal combustion engines comprising a pump chamber having inlet and discharge passages, an extensible and contractible pumping element in said pump chamber having passages leading respectively to external atmosphere and to the intake side of the engine, and a common valve operating to open the interior of said element to the intake side of the engine and to close the interior of said element to external atmosphere when the element is extended to a certain degree and to close the interior of said element to the intake side of the engine and open the interior of said element to external atmosphere' when the element has contracted to a certain de ree.

26. A liquid fuel pump for interna coin bustion engines comprising a pump chamber having inlet and discharge passages, an extensible and contractible pumping element in said pump chamber having passages leading respectively to external atmosphere and to the intake side of the engine, a common valve operating to open the interior of said element to the intake side of the engine and to close the interior of said element to externa] atmosphere when the element is extended to a certain degree and to close the interior of said element to the intake side of the engine and open the interior of said element to external atmosphere when the element has contracted to a certain degree, and means on the discharge side of the pump for controlling the extension movement of said element.

27. A liquid fuel pump for interal combustion engines comprising a pump chamber having inlet and discharge passages, an extensible and contractible pumping element in` said pump chamber, passages leading from the interior of said element respectively to the intake side of the engine and to external atmosphere, a common valve to open and close said passages and a lost motion connection between said element and valve to operate the valve as the element extends and contracts to certain degrees.

28. A liquid fuel pump for internal coinbustion engines comprisln a chamber, an extensible and contractib e pumping element therein, havin corrugated side walls and a closed free en passages leading from the interior of said element respectively to the intake side of the engine and to external atmosphere, a common valve to open and close said passages, a lost motion connection between said element and valve to operate the valve as ,the element extends and` `contracts to certain degrees, and means toA adjust the coactive relationship between said element and valve.

29. A liquid fuel pump for internal com bustion engines comprising a chamber, a variable displacement pumping element therein, passages leading from the interior of said element respectively to the intake side of the engine and to external atmosphere, a valve to open and close said passages, a lost motion connection between said element and valve to operate the valve as the element extends and contracts to certain degrees, said connection including a screw carried b said element, said screw having spaced a utments, and a valve operating y sleeve loosel mounted on said screw between said a utments.

30. A liquid fuel pump for internal combustion engines com risin a chamber having valved inlet an disc arge passages, a. variable displacement pumping element therein, passages leading from the interior of said element respectlvely to the intake side of the engine and to external atmosphere, a valve to open and close said passages, a lost motion connection between said element and valve to operate the valve as the element extends and contracts to certain degrees, said connection including a screw carried by said element, said screw having spaced abutments, a valve operating sleeve loosely mounted on said screw between said abutments and means to adjust one of said abutments for controlling the coactive relationship between the element a'nd valve.

31. A pump comprising a pump chamber having inlet and discharge passages, an ex-4 pansible and contractible pumping element in said chamber, and means for simultaneously o ning the interior of the element to reduce pressure and closing the interior of the element to atmosphere and vice versa.

32. A pump comprising a pump chamber having inlet and discharge passages, an expansible and contractible pumping element 1n said chamber, and means o erated by the movement of said pum ing e ement for simultaneously opening t e interior of the element to reduced pressure and closing the interior of the element to atmosphere and vice versa.

33. A pump comprising a pump chamber having inlet and discharge passages, an expansible and contractible pumping element in said chamber having passages leading respectively to reduced pressure and atmosphere, and means for simultaneously opening one passage and closing the other passage.

34. A pump comprising a pump chamber having inlet and discharge passages, an expansible and contractib-le pumping element 1n said chamber having passages leading respectively to reduced pressure and to atmosphere, and means operated by the movement of the pumping element for simultaneously opening one passage and closing the other passage.

In testimony, that I claim the foregoing as my invention, I` have signed my name this 15th day of May 1917.

JOSEPH ivv. JONES. 

